Feeding device for stay



H. DE SMITH. FEEDIN`G DEVICE FOR STAY APPLYING MACHINES.

APPLICATION FILED JULY 24.1916.

Patented'June 3, 1919.

2 SHEETS-SHEET l- H. DE SMITH. I FEEDING DEVICE FOR STAY APPLYING MACHINES. APPLICATION 'r`|LED1UL'Y24,19l6.

Patented June 3, 1919.

2 SHEETS-SHEET 2- fing:

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WITNESS A [NVE/V701? 7/ l HIS A TTOH/VEV UNITED. STAT-Es PAT HENEY DE SMITH, or EocHEsTEE, NEW Yoan, A ssIeNoE To M. n. iiNowLToN comm, or EocnEsTEE, NEW Yoan, A. coEromTIoN or NEW YoEx.

. FEELING DEVICE non STAY-APPLYING MAcHINEs'.

Specication of Letters Patent.

To aIZZ 'where t may concern.:

Be it known that I, HENRY DE SMITH, a

i., Citizen of the United lStates, and resident of erating the same in a manner whereby itwill i Rochester, In the county of Monroe and State of New York, have invented certain new and useful Improvements in Feedin Devices for 'Stay-Applying Machines, o which the following is a specification.

My invention relates to that class of machines adapted for applying stays or reinforcing strips 4to the corner joints of boxes made of paperboard or like materialh in which are embodied stay-strip applying means and stay-strip feeding means; the

'said feeding means being operative to feed a stay-strip from a ing means to be usual and well known manne The feeding means in most common use in this class of machines comprise a reciprocating strip-engaging device and means for opsupply roll to'said applyoperated upon thereby in be caused on its forward feeding st roke to engage and carry forward the strip, and then become released from said strip atthe limit of its forward stroke so as to move backwardly' without producing any corresponding backward movement of the strip. Such feeding device comprises a carrie-r havg mounted thereon .two coperatmg gripping members arranged to permit of the passage of the stay-strip therebetween, one of which members is stationary with respect to the carrier and the other pivoted for movement to and from a gripping position relative to said stationary member. Connected with this movable ripping member is an actuating means which, inthe operation of the machine, .first rocks said member into gripping engagement with the strip, and

en, by a continued movement, imparts a forward stroke to the complete feed device. Such forward` stroke of the feed device determines the forward feeding of the staystrip. As the movement of the pivoted gripping member relative to the lower coperating member is relatively slight, however, it

sometimes happens in the rapid operation of the machine that said pivoted member does not become entirely released from the strip 'at the commencement of its backward stroke,

in which event it pulls the strip backwardly with it a greater or le distance. Ilhis of course means short and irregular feeding. Because of this, it 1has been the object oflmy I operating presser dies,

invention to provide means for assuring the complete release of the gripping members from the strip at the end of the forward or feed' stroke of the same. complish by means of my improved feed device as illustrated in the accompanying drawings, in which Figure 1 is a side elevation of part of a oEEicE.

.` Patented June 3, 1919. l Application led July 24, 1916. Serial No. 110,934. i

This object I' ac..

stay-applying machine provided with my r l invention.

Fig. 2 is an enlarged view of the feed device removed from its connection with the machine and showing in closed strip-engaging positio Fig. 3 is a similar view showing the gri ping members in open strip-releasing position.

the gripping members Fig. It isa view corresponding to Fig. 2,

with the upper gripping member removed from its connection with the feed carrier plate. I

F ig.. 5 is a view of the removed upper gripping member, looking at that side thereof opposite that shown in Fig. 2.

Fig. 6 is a sectional elevation showing the gripping members from that side thereof opposite that shown ing taken on the line 6 6 of Fig. 7, and

- Fig. 7 is a horizontal section taken on the line 7-7 of Fig. 6, showing the operative onnec'tion between the two gripping memers. v

Similar reference characters indicate like parts' in the several figures of the drawings.

rThe machine here shown as provided with my invention is a stayer of Well known construction and operation, and therefore will be only briefly described herein with reference `to those parts other than the feed The several parts constituting the machine are mounted upon a suitable supporting frame,- indicated erence numeral 2. In the upper part of this frame is joui'naled a drive shaft 3 having at its rear end a clutch-controlled-drive pulley 4. I

At the front end of the machine is the stay-applying means', comprising two cothe lower` of which, indicated at -5, is normally stationary and adapted to support a box-corner, while the upperone, indicated at 6, is vertically movable `and adapted to press a stay-strip upon the box-corner on said lower die. The movin Fig. 2the section bel generally by the 'refl feed device.

able die 6 is mounted in a sliding head 7 which is actuated from a crank-'pin on the drive shaft through the medium of a pitman 8, in usual manner.

In the operation of the machine, the staystrip, indicated at s, is adapted to be fed from a supply reel (not shown) to a position between said presser dies, by a suitable This feed device comprises a reciprocatory carrier plate 9 slidably connected with a stationary guide plate v10 and having connected therewith two coperating gripping members, 11 and 12. Heretofore one of these members-the lower onehas been stationary with respect to the carrier, and the other vhas been pivoted for movement to and from a gripping position relative to said stationary one. In accord-ance with my present invention, both members are pivoted to the carrier and are operated for simultaneous movement, first, in a di-v rection toward each other at the commencement of the feeding stroke to engage the interposed strip, as shown in Fig. 2, and next, in a direction vaway from each other at the completion of the feeding stroke to release the strip, as shown in Fig. 3. In this way the gripping members will be effectively released from the strip at the end of each feed stroke.

The gripping members may be adapted for operation in this described manner in any suitable way. As here shown, the lower and upper members are mounted on pivots 13 and 14 respectively, attached to the carrier 9, and are operatively connected by means of a crank-pin 15 on the shank 16 of the lower member engaging within a slot 17 in the hub 18 of the upper member, whereby movement of one member will effect a corresponding movement of the other member in a direction toward and* from each other.

These gripping members may be operated in the manner described by any suitable means. As here shown, they are operated byV means of a lever 19 which is pivoted at its upper end to the frame' at 20, and at its lower end is connected through a link 21 with a lever arm 22 of the upper member 12. This lever 19 is given its forward throw by a cam 23 on the shaft 2 engaging a roll 24: thereon, and is given its return throw by a connecting spring Upon the forward throw of the lever 19, the connecting gripping members are first brought into gripping engagement with the interposed strip, after which the continued movement of the lever effects an advance of the feed device and engaged strip. After the lever has swung forward a predetermined distance, itis then retracted, thereby operating to first separate the gripping members from gripping engagement -with the strip by a simultaneous movement of the same in a direction away from each other, as shown in Fig. 3, following which and after the lever arm 22 of the upper member has been brought into contact with the stop projection 26 on the carrier 9, the continued backward or return swing of the lever 19 will return the feed device to its starting position.

What I claim is 1. In a machine of the character specified, the combination with stay-strip applying means, of feeding means for feeding predetermined lengths of a continuous staystrip to said applying means, comprising a reciprocating carrier movable in a direction lengthwise of the strip, an upperl gripping member pivoted to the carrier, a lower gripping member pivoted to the carrier in advance of the pivot of the first mentioned member, the gripping portion of the lower gripping member being in advance of the pivot point of said member and a pin connection between said gripping members, said connection being to the rear of the pivot of the lower gripping member, whereby movement imparted to one of the gripping members will cause the movement of the other.

2. In a machine of the character specified, the combination with stay-strip applying means, of feeding means for feeding predetermined lengths of a continuous staystrip to said applying means, comprising a reciprocating carrier, a pair of gripping members pivoted to said carrier, one of said gripping members having a slot therein remote from its pivot point and the other of said gripping members having a pin thereon remote from its pivot point and engaged in the slot of the first mentioned member, whereby movement imparted to one of said members will cause the movement of' HENRY DE SMITH.

Witnesses: i

THos. D. PA'rToN HUBERT J. MARTIN. 

